GB438202A - Improvements in door-operated electric switches - Google Patents
Improvements in door-operated electric switchesInfo
- Publication number
- GB438202A GB438202A GB1447234A GB1447234A GB438202A GB 438202 A GB438202 A GB 438202A GB 1447234 A GB1447234 A GB 1447234A GB 1447234 A GB1447234 A GB 1447234A GB 438202 A GB438202 A GB 438202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- door
- plunger
- spring
- switch
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
- H01H13/183—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/12—Movable parts; Contacts mounted thereon
- H01H23/14—Tumblers
- H01H23/146—Tumblers having a generally tubular or conical elongated shape, e.g. dolly
Landscapes
- Lock And Its Accessories (AREA)
Abstract
438,202. Retractive switches. BAER, B. W., 11, Hazelwood Road, New Farm, Brisbane, Australia. May 14, 1934, No. 14472. [Class 38 (v)] A retractive tumbler switch is adapted to be held in the on position when a door is closed, and released to move to the off position when the door is opened. The tumbler switch has an operating lever 13 which operates a movable contact 14 through snap action mechanism. Slidable in an extension of the casing is a plunger 25 biassed to the right by a spring 26. A rod 27 having a head 28 is slidable in the plunger 25 and biassed away from it by a spring 29. The rod 27 is connected to the plunger 25 by a pin 27<a> passing through a slot in the rod 27. As shown the plunger 25 is pushed in by closure of a door (not shown), and the head 28 lies in the path of an extension 23 of lever 13. The switch can however be moved to the closed position the head 28 sliding against spring 29, but the switch is held closed against the action of return spring 21. On opening the door the plunger 25 moves to the right due to spring 26, and pin 27<a> withdraws the head 28 out of the path of the lug 23 and the switch opens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1447234A GB438202A (en) | 1934-05-14 | 1934-05-14 | Improvements in door-operated electric switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1447234A GB438202A (en) | 1934-05-14 | 1934-05-14 | Improvements in door-operated electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB438202A true GB438202A (en) | 1935-11-13 |
Family
ID=10041796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1447234A Expired GB438202A (en) | 1934-05-14 | 1934-05-14 | Improvements in door-operated electric switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB438202A (en) |
-
1934
- 1934-05-14 GB GB1447234A patent/GB438202A/en not_active Expired
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